Poster frame



FIG. 1 is a front perspective view of the poster frame;

FIG. 2 is a rear perspective view of the poster frame;

FIG. 3 is a front view of the poster frame;

FIG. 4 is a top view of the poster frame; and,

FIG. 5 is a rear view of the poster frame. 

An ornamental design for a poster frame, as shown. 